Castration -- that's what made an Iowa U-S senate candidate's ad campaign go viral. Our Vanessa Peng shows us what impact the ad could have on her campaign. She has our top story...Vanessa ? Stacey, Kevin, the TV commercial may have some shocking words -- but everyone we talked to agrees -- it's effective. 11:25 "I'M JONI ERNST I GREW UP CASTRATING HOGS ON AN IOWA FARM.. Michelle Golden, Ames OH MY GOSH." 29 Alan Randall, Ames 19:04 "I CAN'T BELIEVE SHE DID IT." 06 Mary Kate Knabel, Ames 20:44 "IT DEFINITELY GRABS YOUR ATTENTION." 45 Joni Ernst gets right to the point. AD "I GREW UP CASTRATING HOGS ON AN IOWA FARM SO WHEN I GET TO WASHINGTON I'LL KNOW HOW TO CUT PORK...SQUEAL" Mary Kate Knabel, Ames 21:00 "I DON'T THINK I'VE EVER SEEN ANYTHING LIKE THAT BEFORE." LAUGH 02 The Iowa US Senate candidate debuts her campaign ad Tuesday and already they're talking -- 1:52 IN JIMMY FALLON SHOW "STOP, STOP, STOP." 55 Late night talk show host Jimmy Fallon couldn't even get past the first line. 2:07 fallon I DON'T KNOW WHAT SHE'S RUNNING FOR BUT JUST GIVE HER THE JOB." 10 Ernst is running for US Senate. The Republican is from Red Oak and hopes to replace retiring Democratic US senator Tom Harkin. joni Ernst, 0:12 "YES, I WAS BEING SERIOUS IT IS SOMETHING THAT WE LIVED VERY SIMPLY ON THAT FARM AND THAT'S WHAT WE GREW UP DOING." 19 At the end of the ad -- Ernst wraps it up with what else? AD 0:26 "WASHINGTON'S FULL OF BIG SPENDERS, LET'S MAKE THEM SQUEAL." 29 dianne Bystrom, ISU Catt Center for Women and Politics 28:28 I THINK ITS EFFECTIVE." Dianne Bystrom knows political advertising, especially those staring women. dianne Bystrom, ISU Catt Center for Women and Politics 31:24 BASED ON RESEARCH ON WHAT POLITICAL ADS SHOW THAT THIS COULD BE A VERY EFFECTIVE AD FOR HER." 29 We asked a hog farmer. dave Struthers, Story County Hog Farmer 9:11 "I DIDN'T HAVE ANY PROBLEM WITH HER SAYING SHE GREW UP IN IOWA CASTRATING PIGS BECAUSE THAT'S JUST A COMMON PRACTICE." 19 And she's just begun. 1:08 joni Ernst "WE HAVE OTHER ADS COMING UP I DON'T WANT SPOIL THE SURPRISE." 13

Israeli Prime Minister Benjamin Netanyahu warned Tuesday that a proposed agreement between world powers and Iran was "a bad deal" that would not stop Tehran from getting nuclear weapons -- but would rather pave its way to getting lots of them and lea...